| Xanthium strumarium | US, New York, Wading River | E S Miller | E S Miller George Stephen West | 21/8/1872 | BIRM |
| Epilobium alsinifolium | NO, Oppland, Kongsvold, Sor-Trondelag | William West | George Stephen West William West | 8/1909 | BIRM |
| Galium boreale | NO, Oppland, Kongevold | | George Stephen West | 12/8/1809 | BIRM |
| Gentianella amarella | NO, Oppland, Dombas | William West | George Stephen West William West | 8/1909 | BIRM |
| Aethusa cynapium | NO, Sandefjord | William West | George Stephen West William West | 8/1909 | BIRM |
| Fallopia dumetorum | NO, Sandefjord | William West | George Stephen West William West | 8/1909 | BIRM |
| Aira caryophyllea | NO, Kundsho | William West | George Stephen West William West | 8/1909 | BIRM |
| Aira caryophyllea | NO, Kongsvold, Sor-Trondelag | William West | George Stephen West William West | 8/1909 | BIRM |
| Carex chordorrhiza | NO, Hjerkin | William West | George Stephen West William West | 8/1909 | BIRM |
| Carex nigra | NO, Dovre Fjeld / Dovrevold | William West | George Stephen West William West | 8/1909 | BIRM |
| Carex nigra | NO, Dovre Fjeld / Dovrevold | William West | George Stephen West William West | 8/1909 | BIRM |
| Hieracium | NO, Arendel | William West | George Stephen West William West | 8/1909 | BIRM |
| Saxifraga umbrosa | IE, Ambiguous locality (IE), Waterville | William West | George Stephen West William West | 5/1904 | BIRM |
| Dryopteris filix-mas | IE, Ambiguous locality (IE), Killarney | William West | George Stephen West William West | 5/1904 | BIRM |
| Polygala | IE, Ambiguous locality (IE), Killarney | William West | George Stephen West William West | 5/1904 | BIRM |
| Agrimonia procera | IE, VCH39 Co. Antrim, Shanes Castle | Charles Cardale Babington | Charles Cardale Babington George Stephen West | 9/9/1852 | BIRM |
| Carex elongata | IE, VCH39 Co. Antrim, Lough Neagh | David Moore | Charles Cardale Babington George Stephen West | | BIRM |
| Littorella uniflora | IE, VCH39 Co. Antrim, Lough Neagh | William West | George Stephen West William West | 6/1900 | BIRM |
| Salix viminalis x caprea = S. x smithiana | IE, VCH39 Co. Antrim, Kilroot | Samuel Alexander Stewart | George Stephen West | 5/1868 | BIRM |
| Orobanche alba | IE, VCH39 Co. Antrim, Cave Hill, Belfast | Alexander Carroll Maingay | George Stephen West Alexander Carroll Maingay | 8/1856 | BIRM |
| Orobanche alba | IE, VCH39 Co. Antrim, Cave Hill, Belfast | William West | George Stephen West William West | 8/1892 | BIRM |
| Elatine hydropiper | IE, VCH39 Co. Antrim, Belfast,Lagan Canal | William Mateer | George Stephen West | 8/1847 | BIRM |
| Huperzia selago | IE, VCH36 Tyrone, Lough Neagh | William West | George Stephen West | 5/1900 | BIRM |
| Osmunda regalis | IE, VCH35 West Donegal | William West | George Stephen West William West | 5/1901 | BIRM |
| Erica erigena | IE, Mayo | John (Joannis) Fraser | George Stephen West John (Joannis) Fraser | 20/4/1876 | BIRM |
| Eleogiton fluitans | IE, VCH27 West Mayo, Westport | William West | George Stephen West William West | 7/1890 | BIRM |
| Osmunda regalis | IE, VCH27 West Mayo, Westport | William West | George Stephen West William West | 7/1890 | BIRM |
| Carex appropinquata | IE, VCH23 Westmeath, Ladestown | David Moore | George Stephen West | 25/7/1843 | BIRM |
| Eleocharis uniglumis | IE, VCH20 Co. Wicklow, Wicklow | David Moore | George Stephen West William West | 17/5/1863 | BIRM |
| Petroselinum segetum | IE, VCH20 Co. Wicklow, Connary | | George Stephen West | 8/1879 | BIRM |
| Myosurus minimus | IE, VCH19 Co. Kildare, Cardington House | | George Stephen West | 12/5/1875 | BIRM |
| Ceterach officinarum | IE, VCH16 West Galway, Roundstone | William West | George Stephen West | 8/1905 | BIRM |
| Ceterach officinarum | IE, VCH16 West Galway, Roundstone | William West | George Stephen West William West | 8/1905 | BIRM |
| Erica mackaiana | IE, VCH16 West Galway, Roundstone | Charles Cardale Babington | George Stephen West | 9/1873 | BIRM |
| Erica mackaiana | IE, VCH16 West Galway, Roundstone | George Stewardson Brady | George Stephen West | 8/1853 | BIRM |
| Erica mackaiana | IE, VCH16 West Galway, Roundstone | William West | George Stephen West | 8/1905 | BIRM |
| Najas flexilis | IE, VCH16 West Galway, Roundstone | John Gilbert Baker | George Stephen West | 9/1853 | BIRM |
| Pinguicula lusitanica | IE, VCH16 West Galway, Roundstone | William West | George Stephen West William West | 7/1890 | BIRM |
| Najas flexilis | IE, VCH16 West Galway, Lough Craigduff | A Sanderson | George Stephen West William West | 8/1909 | BIRM |
| Daboecia cantabrica | IE, VCH16 West Galway, Kylemore | George Stewardson Brady | George Stephen West John Gilbert Baker | 1852 | BIRM |